OEM straps or not?

So I bought these straps from a seller claiming that they are OEM last year. I bought an extra pair as a spare. For the price I paid, I expected them to be stamped leather. After a year of use, I compared the straps and they seem to have different patterns to my surprise. Now I’m thinking that they are authentic. Seller marked them “New with defects”. Can these be possibly be real alligator straps?